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scsi: lpfc: Remove IRQF_ONESHOT flag from threaded IRQ handling

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IRQF_ONESHOT is found to mask HBA generated interrupts when thread_fn is
running.  As a result, some EQEs/CQEs miss timely processing resulting in
SCSI layer attempts to abort commands due to io_timeout.  Abort CQEs are
also not processed leading to the observations of hangs and spam of "0748
abort handler timed out waiting for aborting I/O" log messages.

Remove the IRQF_ONESHOT flag.  The cmpxchg and xchg atomic operations on
lpfc_queue->queue_claimed already protect potential parallel access to an
EQ/CQ should the thread_fn get interrupted by the primary irq handler.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20240305200503.57317-4-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Justin Tee
2024-03-05 12:04:54 -08:00
committed by Martin K. Petersen
parent 4ddf01f2f1
commit 4623713e7a
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/lpfc/lpfc_init.c
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@@ -13055,7 +13055,7 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba)
rc = request_threaded_irq(eqhdl->irq,
&lpfc_sli4_hba_intr_handler,
&lpfc_sli4_hba_intr_handler_th,
IRQF_ONESHOT, name, eqhdl);
0, name, eqhdl);
if (rc) {
lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
"0486 MSI-X fast-path (%d) "